Home / 15,740.36-21,679.60-11,755.16

Finding the Fourth Proportional to 15,740.36, 21,679.60 and 11,755.16

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Solution

The fourth proportional to 15,740.36, 21,679.60 and 11,755.16 is: 16,190.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,740.36 : 21,679.60 = 11,755.16 : x
  2. Step 2: Convert to fraction form
    15,740.36/21,679.60 = 11,755.16/x
  3. Step 3: Cross multiply
    15,740.36x = 21,679.60 × 11,755.16
  4. Step 4: Simplify right side
    15,740.36x = 254,847,166.74
  5. Step 5: Solve for x
    x = 254,847,166.74/15,740.36
  6. Step 6: Final answer
    x = 16,190.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.